som ‧ no ‧ lent /ˈsɒmnələnt $ ˈsɑːm-/ BrE AmE adjective literary
[ Date: 1400-1500 ; Language: Old French ; Origin: Latin somnolentus , from somnus 'sleep' ]
1 . almost starting to sleep SYN sleepy :
He lay quiet, somnolent after the day’s exertions.
2 . making you want to sleep SYN soporific :
a somnolent summer’s afternoon
—somnolence noun [uncountable]